Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-14

WSH @ PIT

Home plate: John Libka

An honest evening's grade: nothing loud, nothing missed by much.

B
Umpire Grade
92.3% accurate
0.5
Run Favor
runs, WSH
3
ABS Overturns
of 6 reviewed

What this shows — how John Libka called the 168 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 155 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.

The zone, as he called it

Challenge 1: Jorbit Vivas — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Joey Bart — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Bryan Reynolds — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Oneil Cruz — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Joey Bart — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: James Wood — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.694 · 3-2 ball called strike· challenged
    Bryan Reynolds vs Miles Mikolas
  2. 2+0.282 · 1-2 strike called ball
    Nick Gonzales vs Miles Mikolas
  3. 3-0.285 · 1-2 ball called strike· challenged
    Oneil Cruz vs Mitchell Parker

Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.

ABS — the Automated Ball-Strike System

6 pitches went to the robots · 3 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Jorbit Vivas — ump said strike, robot ruled strike: upheld.
  2. 2Joey Bart — ump said ball, robot ruled strike: overturned.
  3. 3Bryan Reynolds — ump said strike, robot ruled ball: overturned.
  4. 4Oneil Cruz — ump said strike, robot ruled ball: overturned.
  5. 5Joey Bart — ump said ball, robot ruled ball: upheld.
  6. 6James Wood — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 5 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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